Scraper device of photogravure press
By designing a scraper device that combines heating, air-drying module and ink scraper in a gravure printing press, the problem of ink residue during printing plate replacement is solved, and the efficiency of the printing press is improved.
Patent Information
- Application Number
- CN202420848000.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-23
AI Technical Summary
When the gravure printing press replaces the plate cylinder, the ink scraping processing time is long due to ink residue, which reduces the efficiency of the printing press.
A scraper device including a frame, a transmission roller, a printing roller, a lifting assembly, a displacement assembly and a scraping assembly is designed, and the printing roller surface is treated with a heating module, an air-drying module and a scraping knife, and the printing roller surface is subjected to ink treatment by lifting and horizontally. Displacement enables comprehensive ink scraping of printing rollers.
The ink is quickly processed through heating and air-drying modules, which shortens the time for replacing the printing plate and improves the efficiency of the printing press.
Smart Images
Figure CN222223701U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of printing machines, in particular to a scraper device of a gravure printing machine. Background Art
[0002] The gravure printing machine uses a round-to-round direct printing method. The printing plate is directly made on the plate cylinder, and the ink is supplied by immersion or inkjet. There is no ink distribution mechanism. Due to the thick ink layer, a drying device is required to use volatile quick-drying ink. The main structure of the gravure printing machine consists of five parts: paper feeding, ink feeding, printing, drying, and paper collection. When the gravure printing machine replaces the plate cylinder, there will be residual ink on the cylinder. At this time, a scraper is needed to scrape the ink. However, since the ink contains water, it is simply air-dried and then scraped. This increases the replacement time and reduces the efficiency of the printing machine. Utility Model Content
[0003] In order to overcome the above-mentioned shortcomings, the utility model provides a scraper device for a gravure printing machine.
[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0005] A scraper device for a gravure printing machine comprises a frame, a driving roller and a printing roller are arranged on the frame, the driving roller is located above the printing roller, and an ink scraping structure is arranged below the printing roller;
[0006] The ink scraping structure includes a lifting component, a displacement component and an ink scraping component, and the lifting component is transmission-connected with the ink scraping component through the displacement component;
[0007] The ink scraping assembly includes an arc plate, a heating module, an air drying module and an ink scraping blade which are sequentially arranged on the arc plate. The arc plate is attached to the surface of the printing roller. The heating module is an electric heating wire. The air drying module includes a hair dryer and blowing holes arranged on the surface of the arc plate. The hair dryer is arranged inside the arc plate. The ink scraping blade is arranged on the surface of the arc plate, and the end of the ink scraping blade is in contact with the surface of the printing roller.
[0008] Preferably, a driving structure is provided between the printing roller and the frame, the driving structure comprising a first motor, a first cylinder, a first fixed seat, a rotating shaft and a rotating disk, the first motor is connected to the rotating disk through the rotating shaft, the rotating disk is located inside the printing roller, the first motor is located inside the first fixed seat, the first cylinder is fixed horizontally on the frame, and the piston rod of the first cylinder is connected to the fixed seat, the first cylinder controls the telescopic movement of the rotating disk so that the rotating disk can be separated from the printing roller, and according to the printing rollers of different lengths, the staff controls the position of the rotating disk through the first cylinder. The first motor controls the rotation of the rotating disk to realize the rotation of the printing roller.
[0009] Preferably, the lifting assembly includes a second cylinder, which is vertically fixed on the ground, and the piston rod of the second cylinder is transmission-connected to the displacement assembly. The second cylinder controls the displacement assembly to move up and down through the piston rod to ensure that the scraper on the arc plate fully fits the printing roller.
[0010] Preferably, the displacement assembly includes a second fixed seat, a second motor, a screw, a guide rod and a guide ring. The second fixed seat fixes the top end of the piston rod of the second cylinder. The second motor is horizontally arranged inside the second fixed seat. The second motor is connected to the screw for transmission. There are two guide rings. Two openings are provided on the guide ring. One of the openings is provided with an internal thread. The screw matches the internal thread. The guide rod passes through the other opening. The guide rod and the screw are parallel. The guide ring is fixed to the bottom of the arc plate. The second motor controls the rotation of the screw. Transmission occurs between the screw and the guide ring, so that the arc plate moves back and forth, so that the heating module, air drying module and ink scraper on the arc plate can process the surface of the printing roller back and forth.
[0011] Preferably, there are two guide rings, and the two guide rings are symmetrical about the arc plate. The two guide rings can keep the arc plate balanced when it moves.
[0012] Preferably, an infrared sensor is provided on the frame, and the infrared sensor is located at the joint of the printing roller and the curved plate. The infrared sensor includes an infrared transmitter and an infrared receiver, which are respectively located on both sides of the printing roller. When the printing roller and the scraper on the curved plate are in contact, the infrared receiver does not receive the infrared signal. When the printing roller and the scraper on the curved plate are separated, the infrared receiver receives the infrared signal.
[0013] Preferably, the length of the arc plate is slightly greater than half of the frame width, and the arc plate only needs to operate on both sides to scrape the printing roller on the frame. If the scraper is too long, it will affect the contact strength with the printing roller and the scraping effect.
[0014] The beneficial effect of the utility model is that in the scraper device of the gravure printing machine, the lifting component and the displacement component can control the lifting and lowering and horizontal displacement of the ink scraping component, so that the ink scraping component can perform circumferential ink scraping treatment on the printing roller, and then cooperate with the heating module, air drying module and ink scraper on the arc plate to scrape off the ink on the surface of the printing roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present invention will be described by way of examples with reference to the accompanying drawings, in which:
[0016] Figure 1 It is a structural schematic diagram of the utility model;
[0017] Figure 2It is a structural schematic diagram of the ink scraping assembly of the utility model. DETAILED DESCRIPTION
[0018] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0019] like Figure 1 and Figure 2 As shown, a scraper device of a gravure printing machine includes a frame 1, on which a driving roller 2 and a printing roller 3 are provided, the driving roller 2 is located above the printing roller 3, and a scraper structure is provided below the printing roller 3, the scraper structure includes a lifting component, a displacement component and a scraper component, the lifting component is transmission-connected to the scraper component through the displacement component, the scraper component includes an arc plate 13, a heating module, an air-drying module and an ink scraper 16 which are sequentially arranged on the arc plate 13, the arc plate 13 is attached to the surface of the printing roller 3, the heating module is an electric heating wire 14, the air-drying module includes a hair dryer and a blowing hole 15 arranged on the surface of the arc plate 13, the hair dryer is arranged inside the arc plate 13, the ink scraper 16 is arranged on the surface of the arc plate 13, and the end of the ink scraper 16 contacts the surface of the printing roller 3.
[0020] The working principle of the ink scraping structure is that the lifting component and the displacement component can control the lifting and horizontal displacement of the ink scraping component to realize that the ink scraping component can scrape the printing roller 3 in the circumferential direction. The arc plate 13 can be attached to the surface of the printing roller 3, and firstly, it is heated by the electric heating wire 14 on the heating module, which can quickly heat up the ink on the arc plate 13 and evaporate the water at the same time, and then the hair dryer blows air, and the air is ejected from each blowing hole 15, which can dry and cool the ink, and finally the ink scraper 16 quickly scrapes out the ink.
[0021] Specifically, a driving structure is provided between the printing roller 3 and the frame 1, and the driving structure includes a first motor, a first cylinder, a first fixed seat 4, a rotating shaft 5 and a rotating disk 6. The first motor is connected to the rotating disk 6 through the rotating shaft 5. The rotating disk 6 is located inside the printing roller 3. The first motor is located inside the first fixed seat 4. The first cylinder is fixed horizontally on the frame 1, and the piston rod of the first cylinder is connected to the fixed seat. The first cylinder controls the rotation of the rotating disk 6 so that the rotating disk 6 can be separated from the printing roller 3. According to the printing roller 3 of different lengths, the staff controls the position of the rotating disk 6 through the first cylinder. The first motor controls the rotating disk 6 to rotate to realize the rotation of the printing roller 3.
[0022] Specifically, the lifting assembly includes a second cylinder 8, which is vertically fixed on the ground, and the piston rod of the second cylinder 8 is transmission-connected to the displacement assembly. The second cylinder 8 controls the displacement assembly to move up and down through the piston rod to ensure that the scraper 16 on the arc plate 13 is fully in contact with the printing roller 3.
[0023] Specifically, the displacement assembly includes a second fixed seat 12, a second motor, a lead screw 9, a guide rod 10 and a guide ring 11. The second fixed seat 12 fixes the top end of the piston rod of the second cylinder 8. The second motor is horizontally arranged inside the second fixed seat 12. The second motor is connected to the lead screw 9 in transmission. There are two guide rings 11. Two openings are provided on the guide ring 11. One of the openings is provided with an internal thread. The lead screw 9 matches the internal thread. The guide rod 10 passes through the other opening. The guide rod 10 and the lead screw 9 are parallel. The guide ring 11 is fixed to the bottom of the arc plate 13. The second motor controls the rotation of the lead screw 9. Transmission occurs between the lead screw 9 and the guide ring 11, so that the arc plate 13 moves back and forth, so that the heating module, air drying module and ink scraper 16 on the arc plate 13 can process the surface of the printing roller 3 back and forth.
[0024] Specifically, there are two guide rings 11 , and the two guide rings 11 are symmetrical with respect to the arc-shaped plate 13 . The two guide rings 11 can keep the arc-shaped plate 13 balanced when it moves.
[0025] Specifically, the frame 1 is provided with an infrared sensor 7, which is located at the joint of the printing roller 3 and the curved plate 13. The infrared sensor 7 includes an infrared transmitter and an infrared receiver, which are respectively located on both sides of the printing roller 3. When the printing roller 3 and the scraper 16 on the curved plate 13 are in contact, the infrared receiver cannot receive the infrared signal. When the printing roller 3 and the scraper 16 on the curved plate 13 are separated, the infrared receiver receives the infrared signal.
[0026] Specifically, the length of the arc plate 13 is slightly greater than half of the width of the frame 1, and the arc plate 13 only needs to operate on both sides to scrape the printing roller 3 on the frame 1. Moreover, if the length of the scraper 16 is too long, it will affect the contact strength with the printing roller 3 and the scraping effect.
[0027] The above is based on the enlightenment of this utility model. Through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A scraper device for a gravure printing machine, characterized in that: The machine comprises a frame, on which a transmission roller and a printing roller are arranged, wherein the transmission roller is located above the printing roller, and an ink scraping structure is arranged below the printing roller; The ink scraping structure includes a lifting component, a displacement component and an ink scraping component, and the lifting component is transmission-connected with the ink scraping component through the displacement component; The ink scraping assembly includes an arc plate, a heating module, an air drying module and an ink scraping blade which are sequentially arranged on the arc plate. The arc plate is attached to the surface of the printing roller. The heating module is an electric heating wire. The air drying module includes a hair dryer and blowing holes arranged on the surface of the arc plate. The hair dryer is arranged inside the arc plate. The ink scraping blade is arranged on the surface of the arc plate, and the end of the ink scraping blade is in contact with the surface of the printing roller.
2. The scraper device of the gravure printing machine according to claim 1, characterized in that: A driving structure is provided between the printing roller and the frame, and the driving structure includes a first motor, a first cylinder, a first fixed seat, a rotating shaft and a turntable. The first motor is transmission-connected to the turntable via the rotating shaft, the turntable is located inside the printing roller, the first motor is located inside the first fixed seat, the first cylinder is horizontally fixed on the frame, and the piston rod of the first cylinder is transmission-connected to the fixed seat.
3. The scraper device of the gravure printing machine according to claim 1, characterized in that: The lifting assembly comprises a second cylinder, which is vertically fixed on the ground, and a piston rod of the second cylinder is transmission-connected with the displacement assembly.
4. The scraper device of the gravure printing machine according to claim 3, characterized in that: The displacement assembly includes a second fixed seat, a second motor, a screw, a guide rod and a guide ring. The second fixed seat fixes the top end of the piston rod of the second cylinder. The second motor is horizontally arranged inside the second fixed seat. The second motor is connected to the screw for transmission. There are two guide rings. Two openings are provided on the guide ring. One of the openings is provided with an internal thread. The screw matches the internal thread. The guide rod passes through the other opening. The guide rod and the screw are parallel. The guide ring is fixed to the bottom of the arc plate.
5. The scraper device of the gravure printing machine according to claim 4, characterized in that: The number of the guide rings is two, and the two guide rings are symmetrical with respect to the arc-shaped plate.
6. The scraper device of the gravure printing machine according to claim 1, characterized in that: The frame is provided with an infrared sensor, which is located at the joint of the printing roller and the arc plate.
7. The scraper device of the gravure printing machine according to claim 1, characterized in that: The length of the arc-shaped plate is slightly greater than half of the width of the frame.